# CVE-2025-54309:  CrushFTP Unprotected Alternate Channel Vulnerability

- Exploited (CISA KEV): yes, added 2025-07-22
- Published: 2025-07-18
- CVSS: 9 CRITICAL (v3.1)
- EPSS: 93.5% (100th percentile)
- CWE: CWE-420

CrushFTP 10 before 10.8.5 and 11 before 11.3.4_23, when the DMZ proxy feature is not used, mishandles AS2 validation and consequently allows remote attackers to obtain admin access via HTTPS, as exploited in the wild in July 2025.

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | Blocks by default | 2025-08-11 | 24 |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | No public claim | — | — |
| Fastly | Before feed history | — | — |
| F5 | Rule published | 2025-12-03 | — |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

### Cloudflare

- 2025-08-11 · new · rule fe088163f51f4928a3c8d91e2401fa3b · default Block
  > CrushFTP - Remote Code Execution - CVE:CVE-2025-54309. Previous action: Log. New action: Block. This is a New Detection
  Source: https://developers.cloudflare.com/changelog/post/2025-08-11-waf-release/
- 2025-08-11 · new · rule 3638baed75924604987b86d874920ace · default Block
  > CrushFTP - Remote Code Execution - CVE:CVE-2025-54309 - 2. Previous action: Log. New action: Block. This is a New Detection
  Source: https://developers.cloudflare.com/changelog/post/2025-08-11-waf-release/
- 2025-09-08 · new · rule 6d24266148f24f5e9fa487f8b416b7ca · default Disabled
  > CrushFTP - Remote Code Execution - CVE:CVE-2025-54309 - 3. Previous action: Log. New action: Disabled. This is a New Detection
  Source: https://developers.cloudflare.com/changelog/post/2025-09-08-waf-release/

### F5

- 2025-12-03 · updated · rule 200013072
  > Updated: signature 200013072 "CrushFTP Arbitrary User Creation" (Authentication/Authorization Attacks, risk High), systems: Other Web Server. References: CVE-2023-43177, CVE-2025-54309.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2025-54309 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2025-54309